REDUCING INFLUENCE OF ECCENTRIC LOAD ON DYNAMIC CHARACTERISTICS OF ROTARY ACTUATOR

Authors

  • Ye Qian Ye Qian SMC pneumatic technical Center, Mechanical Engineering School, Shanghai Jiao Tong University, Dong Chuan road 800, Min Hang district, Shanghai, China, 200240SMC pneumatic technical Center, Mechanical Engineering School, Shanghai Jiao Tong University, Dong Chuan road 800, Min Hang district, Shanghai, China, 200240
  • Meng GuoXiang SMC pneumatic technical Center, Mechanical Engineering School, Shanghai Jiao Tong University, Dong Chuan road 800, Min Hang district, Shanghai, China, 200240

Keywords:

pneumatic rotary actuator, eccentric load, instability, real-coded genetic algorithm, optimization design

Abstract

The main objective of this study is to reduce the eccentric load’s influence on the dynamic characteristics of a horizontally installed rotary actuator. The solution is drilling a hole into the rotary shaft of a rotary cylinder. With the rotation of the rotary actuator the hole will open and connect the two working chambers within a certain angular range, the back pressure will increase and the torque introduced by the back pressure partly compensates for the torque of the eccentric load. The design procedure for the connecting hole is as follows: First, experiments that study the effect of eccentric loads on the dynamic characteristics of a rotary actuator were carried out, and a stability index αv was proposed; Second, a mathematical model including the connecting hole was built; Third, a real–coded GA optimization design for the connecting hole whose object is to minimize αv was conducted. Simulations and test results show that the method worked efficiently.

Downloads

Download data is not yet available.

Author Biographies

Ye Qian Ye Qian, SMC pneumatic technical Center, Mechanical Engineering School, Shanghai Jiao Tong University, Dong Chuan road 800, Min Hang district, Shanghai, China, 200240SMC pneumatic technical Center, Mechanical Engineering School, Shanghai Jiao Tong University, Dong Chuan road 800, Min Hang district, Shanghai, China, 200240

Ye Qian Ye Qian is a lecturer at ShangHai JiaoTong University. He received his Ph. D. degree from Harbin industry University in 2002. One of his present research efforts involves the simulation and control of pneumatic systems and research on the flow-rate characteristics of pneumatic components.

Meng GuoXiang, SMC pneumatic technical Center, Mechanical Engineering School, Shanghai Jiao Tong University, Dong Chuan road 800, Min Hang district, Shanghai, China, 200240

Meng GuoXiang Meng GuoXiang is a professor at ShangHai JiaoTong University. She received her Ph. D. degree from the University of Wisconsin-Madison in 1987. One of her present research efforts involves the simulation and control of pneumatic transmission systems.

References

Li, J. F. 1991. Dynamics of pneumatic transmission

system, HuaNan institute of technology publish society,

WuHai.

Wang, L. 2003. On Nonlinear Constrained Optimization,

journal of liaoning institute of technology,

(1), pp. 13-15.

Wang, P., Peng, G. and Wu, Q. 2004. Application of

parameter adjustors based on stability theory to

pneumatic manipulators, Journal of University of

Science and Technology Beijing, 26(6), pp. 666-

Wang, P., Peng, G.-Z. and Wu, Q.-H. 2003. Intelligent

PID control of pneumatic rotary actuator angle

servo system, Journal of Beijing Institute of Technology

(English Edition), 12(SUPPL), pp. 16-19.

Wang, P., Peng, G.-Z. and Wu, Q.-H. 2003. Pneumatic

rotary actuator angle control system, Journal

of Beijing Institute of Technology (English Edition),

(4), pp. 362-365.

Yamamoto, K., Ishii, M., Noborisaka, H. and Hyodo,

K. 2004. Stand alone wearable power assisting suit

- Sensing and control systems, Proceedings - IEEE

International Workshop on Robot and Human Interactive

Communication, pp. 661-666.

Ye Q., Meng G. X., Yang L. H. and Xie W. H. 2006.

Speed Stability Criterion of the Rotary Cylinder

with Eccentric Load, Journal of ShangHai

JiaoTong University, 40(12), pp. 2089-2092.

Yoshimitsu, T. and Yamamoto, K. 2004. Development

of a power assist suit for nursing work, Proceedings

of the SICE Annual Conference, pp. 691-

Zhang, Y. A. and Nishi, A. B. 2003. Low-pressure air

motor for wall-climbing robot actuation, Mechatronics,

(4), pp. 377-392.

Zhang, Y. and Nishi, A. 1999. Robot actuation with

low-pressure air-powered motors, Advanced Robotics,

(1), pp. 59-74.

Zhang, X. E. 2003. Practical pneumatic technology

nowadays. Mechanic engineering publish society,

Beijing.

Downloads

Published

2007-08-01

How to Cite

Ye Qian, Y. Q., & GuoXiang, M. (2007). REDUCING INFLUENCE OF ECCENTRIC LOAD ON DYNAMIC CHARACTERISTICS OF ROTARY ACTUATOR. International Journal of Fluid Power, 8(2), 17–24. Retrieved from https://journals.riverpublishers.com/index.php/IJFP/article/view/539

Issue

Section

Original Article